Mechanical coke-puller.



PATBNTED NOV. 15, 1904.

P. C. SOMES.

MECHANICAL COKE PULLER.

APPLICATION FILED APR. 7, 1904.

fill?! lllfllflflll u WJTNESSESQ N0 MODEL.

1rd! a UNTTED STATES Patented November 15, 1904.

PATENT OFFICE.

FRANK CHASE SOMES, OF IVASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR TO JAMES ELLVOOD JONES, OF SWITCHBACK, 'EST VIRGINIA.

MECHANICAL COKE-FULLER.

SPECIFICATION forming part of Letters Patent No. '775.196, dated November 15, 1904.

Application filed April '7, 1904. Serial No. 202,047. (No model.)

To all whom, it 71mg concern.-

.Be it known that I, FRANK CHASE SoMEs. a citizen of the United States of America, and a resident of IVashington, in the District of Columbia, have invented certain new and useful Improvements in Mechanical Coke-Pullers, of which the following is a specification.

This invention relates to a coke-puller designed to be operated b y machine for pulling coke from coke-ovens, and it is particularly adapted for discharging beehive coke-ovens. In the manufacture of metallurgical coke the oven known as the beehive oven, so called because of its dome-shaped form, has been generally adopted, being found to give the best results. In the burning and wetting of the coal the coke is produced in a caked mass having a vertical stratification or columnar crystallization, and it is desirable to avoid as far as possible breakage of the sticks extracted from the oven.

The object of the invention is to secure a quick and thorough discharge of the oven without unnecessary breakage of the coke.

The invention relates more particularly to an underworking wedge-like scraper movable over the bottom of the coke-oven and operative on its instroke to loosen the coke for withdrawal and on its outstroke to withdraw the so-loosened coke.

The invention consists principally in the combination, with the underworking wedgelike scraper operating to loosen the caked coke on the instroke and withdraw the loosened coke on the outstroke, of a sliding eX- tension operative on the outstroke to withdraw the loosened coke directly over the scraper at the inner end of its stroke or coke which may fall over the scraper during the outstroke.

Figure 1 of the accompanying drawings represents a plan view, partly in section, of one forni of this invention. Fig. 2 represents a longitudinal vertical section thereof on line 2 2 of Fig. 1. showing the coke-puller 0n its instroke operating to loosen the coke within the oven. Fig. 3 represents a similar section showing the coke-puller on its outstroke and the extension in operation. Fig. LLrepresents a transverse section of the coke-puller bar on line 4L 4 of Fig. 2.

The same reference characters indicate corresponding parts in all the figures.

This coke-puller is designed to be mounted on a machine adapted to thrust it into and retract it from the oven andswing itlaterally in either direction to enable it to engage the coke at the sides of the oven. The machine shown in the expired United States Patent No. 446,936 Inay be used for this purpose. The coke-puller comprises an actuating-bar 10, which is preferably rigid throughout, the rear portion thereof having a rack-bar or rack-teeth 11 corresponding to the rack-bar f/ of said patentand the front portion having a longitudinal socket 12 and a longitudinal passage 13 connecting said socket with the outer end of the bar. A scraper 20 is disposed at the front end of the bar 10. This scraper, which is hollow or otherwise, is of wedge-like form and of a breadth equal to the desired width of the scraper, and it coniprises when hollow two oppositeside plates 21 and 22, an inclined top plate 23, and an upright or approximately upright plate 2a. These plates are made of thick metal or of refractory material adapted to withstand the heat of the oven. The body of the scraper may be provided when hollow with longitudinal partitions, as 25 and 26, having rounded projections. as 27 and 28, on their lower edges, adapted to slide over the oven-bottoni on the in and out stroke of the coke-puller. This scraper may be of any suitable form whereby it is adapted to perform the double function of loosening and withdrawing coke.

A sliding' extension 30 serves to extend the coke-puller on the outstroke to receive coke which may have rested on or may fall over the inclined front of the scraper. This sliding extension may be in the form of a solid or skeleton plate disposed underneath the scraper and adapted to slide forward to extend the coke-puller or permit the scraper to move backward over it. This sliding extension-plate 30 is provided with a shank 31, which extends through the passage 13 into the socket 12 of the bar 10 and is provided at its inner end with a head 32. An expansive spring 40 is disposed in the socket 12, between the inner end thereof and the head 32 of the shank of the sliding extension-plate, and operates normally to thrust said plate forward and hold it in extended position. The front end of the bar 31 is provided with a lateral attaching-lug 33, which forms connection with the sliding plate. This lug is adapted to form a stop for the sliding extension at its inner and outer positions and is adapted to be engaged by the front portion of the scraper on the outward stroke thereof from the oven, whereby the extension in open position is drawn out with the scraper.

In the use of this invention the coke-puller is thrust into the oven, along the bottom thereof, a sufficient distance to make a proper drawing of coke. On this instroke the extension 30 comes in contact with the coke, and the resistance thereofl tends to close said extension under the scraper, as shown in Fig. 2, the tension of the spring 4.0 being preferably such as to permit such closing; but the upper beveled front face of the scraper operates like a wedge to lift the coke under which it passes and to loosen such coke from the caked mass of coke within the oven. The main portion of the so loosened coke falls behind the scraper; but at the end of the instroke a small part thereof lies over the top of the scraper. The outstroke of the coke-puller for the withdrawal of the coke is then made, and the scraper 2O moves outward over the extension-plate 30, which is held stationary by the spring 40 until the lug 33 engages the rear bar of said plate. The back 24 of the scraper pulls out the main body of the loosenedcoke; but the coke which was immediately above the scraper at the end of the instroke falls forward in front of the scraper and is caught on the extension-plate 30, as shown in Fig. 3, and withdrawn from the oven. Then an instroke is made to the far side of the oven, if the extension-plate is not closed by the resistance of the coke the front end of said plate comes in contact with the wall of the oven, and the forward motion of the coke-puller causes the spring 40 to be contracted and the scraper to slide over said. plate up against the oven-wall, so as to loosen the caked coke adjacent thereto. At the beginning of the outstroke from this point the sliding extension 80 is held against the oven-wall by the spring 40, and the scraper 2O moves back over said plate and exposes it to receive coke which may fall forward from the scraper. As the lugs 27 or 28 or other projections at the front part of the scraper reach and engage the rear bar or part of the extension-plate 30 the latter is retracted while in open position in unison with the outward movement of the scraper, and the coke which was directly above the scraper at the end of the instroke and any that falls forward over the scraper on the outstroke is caught on the extension 30 and is taken out thereby.

I claim as my inventionv l. Acoke-puller comprising an underworking scraper adapted to operate on its instroke to loosen coke for withdrawal and on its outstroke to withdraw loosened coke, and a sliding extension-plate movable on said scraper and adapted to receive and hold the loosened coke which falls thereon on the outstroke.l

2. A coke-puller comprising an underworking wedge-like scraper adapted to operate on its instroke to loosen coke for withdrawal and on its outstroke to withdraw loosened coke, a sliding extension-plate at the bottom of said scraper, and means for extending said plate to receive coke falling fromsaid scraper on the outstroke.

B. Acoke-puller comprising an underworking wedge-like scraper adapted to operate on its instroke to loosen coke for withdrawal and on its outstroke to withdraw loosened coke, a sliding extension-plate at the bottom of said scraper. and automatic means for extending said plate to receive coke falling from said scraper on the outstroke.

4. A coke-puller comprising an underworking scraper operative on its instroke to loosen coke for withdrawal and on its outstroke to withdraw loosened coke, a sliding extensionplate supported underneath said scraper, and means connected with said scraper for engaging said sliding extension-plate on the outstroke.

5. A coke-puller comprising an underworking scraper operative on its instroke to loosen coke for withdrawal and on its outstroke to withdraw loosened coke, a sliding extensionplate supported underneath said scraper, means connected with said scraper for engaging said sliding extension-plate on the outstroke` and means for holding said plate stationary during a portion of the outward movement of the scraper.

6. A coke-puller comprising an underworking scraper adapted to operate on its instroke to loosen coke for withdrawal and on its outstroke to withdraw loosened coke, a bar for supporting said scraper provided with a socket at its front end, a sliding extension-plate operative underneath said scraper and provided with a shank extending' into said socket, a spring within said socket for thrusting and holding said sliding extension in extended position, and means on said scraper for engaging said extension to withdraw it in extended position in unison with the scraper.

FRANK CHASE SOMES.

Witnesses:

JAs. S. MoDoNoGH, S. M. McCoLL.

IOO 

